4/21/2008 @ 7:45PM

In Depth: Europe's Most Congested Cities

5. Edinburgh, Scotland

Average speed: 18.5 mph or 30 kph

About 160,000 vehicles enter Scotland’s capital city every day, which is substantial considering its population of only 463,510. The city forecasts that the number of vehicles entering the city will reach 180,000 by 2012. Edinburgh government rejected a congestion-pricing proposal in 2004. However, since 2000, it has invested 130 million pounds in transportation improvements. Some of it has helped decrease car traffic: Bus use has increased in Edinburgh with Lothian Buses carrying around 25% more passengers now than in 1997. One-fourth of Edinburgh’s residents walk or bike to work, the highest rate in Scotland.